package top.yangbuyi.aspectj;


import cn.hutool.core.date.DateUtil;
import com.alibaba.fastjson.JSON;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.HandlerMapping;
import top.yangbuyi.acpect.annotaction.Log;
import top.yangbuyi.acpect.enums.BusinessStatus;
import top.yangbuyi.constants.Constants;
import top.yangbuyi.domain.OperLog;
import top.yangbuyi.domain.User;
import top.yangbuyi.service.impl.OperLogService;
import top.yangbuyi.utils.AddressUtils;
import top.yangbuyi.utils.IpUtils;
import top.yangbuyi.utils.ServletUtils;
import top.yangbuyi.utils.ShiroSecurityUtils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.Map;

/**
 * @description: 杨不易网站:www.yangbuyi.top
 * @program: yangbuyiopenHis2020
 * @ClassName: OperLogAspect
 * @create: 2020-09-01 14:28
 * @author: yangbuyi
 * @since： JDK1.8
 * @OperLogAspect: 操作日志切面$
 **/
@Aspect
@Component
@Order(1)
public class OperLogAspect {
	  private static final Logger log = LoggerFactory.getLogger(OperLogAspect.class);
	  @Autowired
	  private OperLogService operLogService;

	  /**
	   * @Description: 杨不易个人网址:http://yangbuyi.top
	   * 功能描述: 配置织入点 找准姿势
	   * @Author: TeouBle
	   * @Date: 2020/9/1 14:45
	   */
	  @Pointcut("@annotation(top.yangbuyi.acpect.annotaction.Log)")
	  public void logPointCut() {

	  }

	  /**
	   * 处理完请求后执行
	   *
	   * @param joinPoint 切点
	   */
	  @AfterReturning(pointcut = "logPointCut()", returning = "jsonResult")
	  public void doAfterReturning(JoinPoint joinPoint, Object jsonResult) {
			handleLog(joinPoint, null, jsonResult);
	  }

	  /**
	   * 拦截异常操作
	   *
	   * @param joinPoint 切点
	   * @param e         异常
	   */
	  @AfterThrowing(value = "logPointCut()", throwing = "e")
	  public void doAfterThrowing(JoinPoint joinPoint, Exception e) {
			handleLog(joinPoint, e, null);
			System.err.println("这里是执行完毕后的异常日志操作" + e.getMessage());
	  }

	  /**
	   * 根据注解获取该方法的一系列数据操作
	   *
	   * @param joinPoint
	   * @param o
	   * @param jsonResult
	   */
	  protected void handleLog(final JoinPoint joinPoint, Exception e, Object jsonResult) {
			try {

				  // 获得注解
				  Log controllerLog = getAnnotationLog(joinPoint);
				  // System.out.println(controllerLog);
				  // System.out.println(controllerLog);
				  if (controllerLog == null) {
						return;
				  }
				  User loginUser = null;
				  // 获取当前的用户
				  if (null != ShiroSecurityUtils.getCurrentUser()) {
						loginUser = ShiroSecurityUtils.getCurrentUser();
				  } else {
						loginUser.setUserName("未知");
				  }

				  // *========数据库日志=========*//
				  OperLog operLog = new OperLog();
				  operLog.setStatus(String.valueOf(BusinessStatus.SUCCESS.ordinal()));
				  // 请求的地址
				  String ip = IpUtils.getIpAddr(ServletUtils.getRequest());
				  operLog.setOperIp(ip);
				  // 设置ip是什么请求
				  String address = AddressUtils.getRealAddressByIP(ip);
				  operLog.setOperLocation(address);

				  // 判断错误异常
				  top.yangbuyi.vo.AfterThrowing afterThrowing = null;
				  String s = JSON.toJSONString(jsonResult);
				  if (s != null) {
						// 转换自定义传输类
						afterThrowing = JSON.parseObject(s, top.yangbuyi.vo.AfterThrowing.class);
				  }
				  // 返回参数
				  operLog.setJsonResult(s);

				  // 设置请求地址
				  operLog.setOperUrl(ServletUtils.getRequest().getRequestURI());
				  if (loginUser != null) {
						operLog.setOperName(loginUser.getUserName());
				  }
				  // 设置错误信息
				  if (e != null) {
						operLog.setStatus(String.valueOf(BusinessStatus.FAIL.ordinal()));
						operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
				  }
				  if (afterThrowing != null && afterThrowing.getCode().equals(Constants.AFTERTHROWING_ERROR)) {
						operLog.setStatus(String.valueOf(BusinessStatus.FAIL.ordinal()));
						operLog.setErrorMsg(StringUtils.substring(afterThrowing.getMsg(), 0, 2000));
				  }
				  // 设置方法名称
				  String className = joinPoint.getTarget().getClass().getName();
				  String methodName = joinPoint.getSignature().getName();
				  operLog.setMethod(className + "." + methodName + "()");
				  // 设置请求方式
				  operLog.setRequestMethod(ServletUtils.getRequest().getMethod());
				  // 处理设置注解上的参数
				  getControllerMethodDescription(joinPoint, controllerLog, operLog);
				  //设置操作时间
				  operLog.setOperTime(DateUtil.date(new Date()));
				  // 保存数据库
				  operLogService.insertOperLog(operLog);
			} catch (Exception exp) {
				  // 记录本地异常日志
				  log.error("==前置通知异常==");
				  log.error("异常信息:{}", exp.getMessage());
				  exp.printStackTrace();
			}

	  }

	  /**
	   * 获取注解中对方法的描述信息 用于Controller层注解
	   *
	   * @param log     日志
	   * @param operLog 操作日志
	   * @throws Exception
	   */
	  public void getControllerMethodDescription(JoinPoint joinPoint, Log log, OperLog operLog) throws Exception {
			// 设置action动作
			operLog.setBusinessType(String.valueOf(log.businessType().ordinal()));
			// 设置标题
			operLog.setTitle(log.title());
			// 设置操作人类别
			operLog.setOperatorType(log.operatorType().ordinal());
			// 是否需要保存request，参数和值
			if (log.isSaveRequestData()) {
				  // 获取参数的信息，传入到数据库中。
				  setRequestValue(joinPoint, operLog);
			}
	  }

	  /**
	   * 获取请求的参数，放到log中
	   *
	   * @param operLog 操作日志
	   * @throws Exception 异常
	   */
	  private void setRequestValue(JoinPoint joinPoint, OperLog operLog) throws Exception {
			// 获取请求方式
			String requestMethod = operLog.getRequestMethod();
			// 对put、post方式处理
			if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
				  String params = argsArrayToString(joinPoint.getArgs());
				  operLog.setOperParam(StringUtils.substring(params, 0, 2000));
			} else {
				  Map<?, ?> paramsMap = (Map<?, ?>) ServletUtils.getRequest().getAttribute(HandlerMapping.URI_TEMPLATE_VARIABLES_ATTRIBUTE);
				  operLog.setOperParam(StringUtils.substring(paramsMap.toString(), 0, 2000));
			}
	  }

	  /**
	   * 是否存在注解，如果存在就获取
	   */
	  private Log getAnnotationLog(JoinPoint joinPoint) throws Exception {
			Signature signature = joinPoint.getSignature();
			MethodSignature methodSignature = (MethodSignature) signature;
			Method method = methodSignature.getMethod();

			if (method != null) {
				  return method.getAnnotation(Log.class);
			}
			return null;
	  }

	  /**
	   * 参数拼装
	   */
	  private String argsArrayToString(Object[] paramsArray) {
			String params = "";
			if (paramsArray != null && paramsArray.length > 0) {
				  for (int i = 0; i < paramsArray.length; i++) {
						if (!isFilterObject(paramsArray[i])) {
							  Object jsonObj = JSON.toJSON(paramsArray[i]);
							  params += jsonObj.toString() + " ";
						}
				  }
			}
			return params.trim();
	  }

	  /**
	   * 判断是否需要过滤的对象。
	   *
	   * @param o 对象信息。
	   * @return 如果是需要过滤的对象，则返回true；否则返回false。
	   */
	  public boolean isFilterObject(final Object o) {
			return o instanceof MultipartFile || o instanceof HttpServletRequest
					|| o instanceof HttpServletResponse;
	  }

}
